Strain clamps are important electrical fittings for carrying tension and current in overhead transmission lines,and it is crucial to conduct failure performance analysis and non-destructive testing on them.Firstly,starting from industry standards and specifications,describe the typical defects and crimping quality evaluation items of compressed strain clamps in detail;Then,the research progress of fault analysis of strain clamps connection is elaborated from the aspects of theoretical calculation,experiment,and numerical simulation.It is pointed out that the mechanical and electrical performance analysis of strain clamps mainly focuses on the analysis of a single failure mechanism,and rarely involves the analysis of the characteristics of strain clamps under multiple physical fields;Next,summarize four non-destructive testing methods for strain clamps;Finally,research directions worth further attention for non-destructive testing of strain clamps are proposed.
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